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Rachel V Thomas

Dangerous Heat Dome To Grip Eastern US, Canada, Putting Over 220 Million Lives At Risk: How To Stay Safe

A <span>dangerous</span> heat dome is expected to engulf much of the eastern United States this week, exposing more than 220 million people to extreme heat as Americans prepare for the Fourth of July holiday weekend.

After scorching parts of Europe with record-breaking temperatures, the heatwave is now forecast to bring dangerously high daytime temperatures, oppressive humidity and unusually warm nights across much of the US, according to the <span>National Weather Service</span> (NWS).

"Dangerous, record-breaking heat will intensify across most of the central and eastern U.S. this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin," the NWS said.

<h2>Which Areas Will Be Most Affected?</h2>

The heat dome is expected to expand across the central and eastern United States, with the most intense heat peaking over the Midwest and Mississippi Valley by Thursday before spreading into the Ohio Valley and the East Coast through the holiday weekend.

Cities including New York City, Philadelphia, Baltimore and Washington, D.C. are forecast to see temperatures climb into the 100s°F (38°C and above).

Forecasters expect more than 100 daily temperature records and about 250 record-warm overnight temperatures through Saturday.

The heatwave will also extend into <span>Canada</span>, particularly southern Ontario and southern Quebec.

According to Environment Canada, millions of Canadians are under yellow and orange <span>heat alerts</span>, with advisories issued across Ontario, Quebec, Alberta, Saskatchewan and the Northwest Territories.

Temperatures in parts of Ontario and Quebec are expected to reach 34°C to 37°C on July 1 and July 2, coinciding with the Canada Day 

holiday and the <span>FIFA Club World Cup</span> match in Toronto.

Extreme Heat Warnings have been issued for several major US cities, including:

<ul><li>Nashville</li><li>St. Louis</li><li>Cincinnati</li><li>Kansas City</li><li>Des Moines</li><li>Chicago</li><li>Detroit</li></ul>

Extreme Heat Watches cover much of the Northeast, where temperatures are expected to exceed 100°F (38°C) through Saturday.

Southern cities including Dallas, Little Rock and Memphis are also expected to face dangerous heat.

Meanwhile, the Four Corners region—covering parts of Utah, Colorado, New Mexico and Arizona—remains under critical fire weather conditions.

Temperatures between 95°F and 105°F (35°C to 40.6°C), combined with high humidity, are expected to push the heat index to 100°F-115°F (38°C-46°C). Some areas could also break monthly or all-time temperature records.

Authorities have urged residents to limit outdoor activities, stay hydrated and seek air-conditioned spaces or cooling centres.

In New York City, Mayor <span>Zohran Mamdani</span> has activated the city's heat emergency plan, with hundreds of cooling centres opening across the city.

In Detroit, where temperatures could reach 100°F (38°C), officials have opened a dozen air-conditioned recreation centres for residents.

The extreme heat could also affect the FIFA Club World Cup, with some matches expected to exceed the heat-index threshold considered unsafe by the global players' union FIFPRO. Texas is expected to experience the hottest conditions, particularly affecting fans travelling to and from stadiums in Houston and Arlington.

In Canada, the heatwave has prompted officials to establish mobile drinking water stations in parks and extend public swimming pool hours to help residents cope with the extreme temperatures.

<h2>How To Stay Safe During Extreme Heat</h2>

The US Centers for Disease Control and Prevention (CDC) says extreme heat can affect anyone. Warning signs include muscle cramps, dizziness, heavy sweating, headaches, nausea, weakness and shortness of breath.

<ul><li>Stay hydrated: Drink plenty of water and avoid excessive caffeine and alcohol.</li><li>Dress for the heat: Wear loose-fitting, light-colored clothing and a wide-brimmed hat.</li><li>Use sunscreen: Apply SPF 30+ before going outdoors.</li><li>Seek cooler spaces: Stay in shaded or air-conditioned areas whenever possible.</li><li>Cool your body: Use wet towels, misting fans or cool water to lower body temperature.</li><li>Recognize heat illness: Seek medical help immediately if symptoms such as confusion, dizziness or nausea worsen.</li><li>Take extra precautions: People with chronic medical conditions or those taking regular medications should consult their doctor on staying safe during extreme heat.</li></ul>

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A dangerous heat dome is expected to engulf much of the eastern United States this week, exposing more than 220 million people to extreme heat as Americans prepare for the Fourth of July holiday weekend.After scorching parts of Europe with record-breaking temperatures, the heatwave is now forecast to bring dangerously high daytime temperatures, oppressive humidity and unusually warm nights across much of the US, according to the National Weather Service (NWS)."Dangerous, record-breaking heat will intensify across most of the central and eastern U.S. this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin," the NWS said.Which Areas Will Be Most Affected?The heat dome is expected to expand across the central and eastern United States, with the most intense heat peaking over the Midwest and Mississippi Valley by Thursday before spreading into the Ohio Valley and the East Coast through the holiday weekend.Cities including New York City, Philadelphia, Baltimore and Washington, D.C. are forecast to see temperatures climb into the 100s°F (38°C and above).Forecasters expect more than 100 daily temperature records and about 250 record-warm overnight temperatures through Saturday.The heatwave will also extend into Canada, particularly southern Ontario and southern Quebec.According to Environment Canada, millions of Canadians are under yellow and orange heat alerts, with advisories issued across Ontario, Quebec, Alberta, Saskatchewan and the Northwest Territories.Temperatures in parts of Ontario and Quebec are expected to reach 34°C to 37°C on July 1 and July 2, coinciding with the Canada Day holiday and the FIFA Club World Cup match in Toronto.Heat Alerts In EffectExtreme Heat Warnings have been issued for several major US cities, including:NashvilleSt. LouisCincinnatiKansas CityDes MoinesChicagoDetroitExtreme Heat Watches cover much of the Northeast, where temperatures are expected to exceed 100°F (38°C) through Saturday.Southern cities including Dallas, Little Rock and Memphis are also expected to face dangerous heat.Meanwhile, the Four Corners region—covering parts of Utah, Colorado, New Mexico and Arizona—remains under critical fire weather conditions.How Are Authorities Preparing?Temperatures between 95°F and 105°F (35°C to 40.6°C), combined with high humidity, are expected to push the heat index to 100°F-115°F (38°C-46°C). Some areas could also break monthly or all-time temperature records.Authorities have urged residents to limit outdoor activities, stay hydrated and seek air-conditioned spaces or cooling centres.In New York City, Mayor Zohran Mamdani has activated the city's heat emergency plan, with hundreds of cooling centres opening across the city.In Detroit, where temperatures could reach 100°F (38°C), officials have opened a dozen air-conditioned recreation centres for residents.The extreme heat could also affect the FIFA Club World Cup, with some matches expected to exceed the heat-index threshold considered unsafe by the global players' union FIFPRO. Texas is expected to experience the hottest conditions, particularly affecting fans travelling to and from stadiums in Houston and Arlington.In Canada, the heatwave has prompted officials to establish mobile drinking water stations in parks and extend public swimming pool hours to help residents cope with the extreme temperatures.How To Stay Safe During Extreme HeatThe US Centers for Disease Control and Prevention (CDC) says extreme heat can affect anyone. Warning signs include muscle cramps, dizziness, heavy sweating, headaches, nausea, weakness and shortness of breath.To stay safe one must:Stay hydrated: Drink plenty of water and avoid excessive caffeine and alcohol.Dress for the heat: Wear loose-fitting, light-colored clothing and a wide-brimmed hat.Use sunscreen: Apply SPF 30+ before going outdoors.Seek cooler spaces: Stay in shaded or air-conditioned areas whenever possible.Cool your body: Use wet towels, misting fans or cool water to lower body temperature.Recognize heat illness: Seek medical help immediately if symptoms such as confusion, dizziness or nausea worsen.Take extra precautions: People with chronic medical conditions or those taking regular medications should consult their doctor on staying safe during extreme heat.

dangerous heat dome to grip eastern us, canada, putting over 220 million lives at risk: how to stay safe

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Dangerous Heat Dome To Grip Eastern US, Canada, Putting Over 220 Million Lives At Risk: How To Stay Safe

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Health Conditions A-Z

Dangerous Heat Dome To Grip Eastern US, Canada, Putting Over 220 Million Lives At Risk: How To Stay Safe

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